Ionic liquids

This study focused on preparing the two low cost ILs triethylammonium oleate and triethylammonium stearate from low cost triethylamine and corresponding fatty acids. The long hydrocarbon chains of the carboxylate in ILs make them to stably disperse in the lubricants and increase the effeciency of additives. In addition, carboxylate ions are stable and not hydrolysed in contact with water.

7p vikwong 29-09-2024 1 1   Download

The main product for the ethylene conversion is propan-2-ol, as a subsequent hydrogenation product after hydroformylation. Pressure and temperature difference are evaluated to understand the influence on selectivity and product formation.

6p vikwong 29-09-2024 1 1   Download

In this paper, three imidazolium ionic liquids 1-methyl -3-ntetradecylimidazolium chloride ([C14MIM]Cl), 1-n-butyl -3-n-butylimidazolium chloride ([C4BIM]Cl), and 1-n-butyl-3-n-tetradecylimidazolium chloride ([C14BIM]Cl) with different alkyl chain lengths were synthesized and characterized by infrared, 1H-NMR and 13C-NMR NMR and nuclear magnetic resonance, and mass spectra.

6p vikwong 29-09-2024 3 1   Download

Two ionic liquids named triethyl ammonium oleate ([TEA][Oleate] and triethyl ammonium stearate ([TEA][Stearate]) were synthesized from triethyl amine and oleic/stearic acids in water and in ethanol solvents. The synthesized ionic liquids were characterized by FT-IR and NMR spectra to confirm their structure. The influence of some parameters such as structure of ionic liquid anion, solvent, reaction time, reaction temperature, and acid/amine molar ratio on the synthesis processes of triethyl ammonium oleate and triethyl ammonium stearate was investigated.

6p vikwong 29-09-2024 3 1   Download

In order to reduce the environmental pollution and the dependence on fossil fuel resource which is depleting, the utilization of waste vegetable oils (WO) for preparation of valuable products are of concern. Four ionic liquids triethyl ammonium carboxylate ([TEA][WO]), octyl ammonium carboxylate ([OcA][WO]), trialkyl methyl ammonium carboxylate ([Aliquat][WO]) and noctyl methyl imidazolium carboxylate ([OMIM][WO]) were synthesized from four different nitrogen compounds and fatty acids of waste vegetable oils.

6p vikwong 29-09-2024 2 1   Download

Through this body of work it was found that both lysozyme and sfGFP remained in their native state in each of the selected PILs at 1 mol% IL: water concentrations. Both selected proteins were stable to highest proportions of PILs which contained the propylammonium cation and the acetate anion. This was contrary to some previously reported studies where the elongation of the alkyl chain length provided a greater stabilising effect than the shorter chained ILs.

135p gaocaolon12 13-06-2021 21 4   Download

A series of novel 10-phenylsulfonyl-2-substituted-4,10 dihydrobenzo[4,5]imidazo[1,2- a]pyrimidin-4-one derivatives obtained from N-sulfonation of 2-substituted-pyrimido[1,2- a]benzimidazol-4(10H)-ones and screened for for their in vitro anti-tuberculosis activities against Mycobacterium tuberculosis H37Rv by Microplate Alamar Blue Assay (MABA) method.

8p tocectocec 25-05-2020 14 1   Download

In an attempt to improve material properties used for oral administration, which is restricted by fast dissolution in the stomach, chitosan hydrogels were coated with cellulose dissolved in ionic liquid. Using insulin as a model compound, the properties of these cellulose-coated microparticles for the controlled release of drug were investigated. The results showed that the coated microparticles were more stable than those which were uncoated at low pH and suitable for oral delivery without requiring any harmful and sophisticated cross-linkage treatment.

8p quaymax4 05-09-2018 32 0   Download

Six 5-arylidene-3-methylrhodanine derivatives were synthesized by the crossed aldolization of aromatic aldehydes with 3- methylrhodanine using 1-butyl-3-methylimidazolium chloride ([BMI]Cl) as phase transfer catalyst in water.

6p baoanhlib 24-01-2017 56 3   Download

This studywas designed to yield data on the supramolecular organization of the phycobilisome apparatus from Synechocystis, and the possible effects of environmental stress on this arrangement. Phycobilisomes were dissociated ina low ionic strength solutionandaquantitative estimation of the protein components present in each subcomplex was obtained using liquid chromatography coupled on-line with a mass spectrometer equipped with an electrospray ion source (ESI-MS).

9p research12 29-04-2013 50 3   Download

Tuyển tập các báo cáo nghiên cứu khoa học trên tạp chí khoa học vật lý quốc tế đề tài: Protonation and Complexation Approaches for Production of Protic Eutectic Ionic Liquids

14p hoami_266 15-09-2011 56 5   Download

Ionic Liquid (IL) có thể dịch sang tiếng Việt là "chất lỏng ion". Sở dĩ gọi như thế vì khác với các chất lỏng khác trong tự nhiên, IL là muối dạng lỏng ở điều kiện thường

5p meoancaran 11-03-2011 460 60   Download

Các hợp chất muối lỏng (còn gọi là chất lỏng ion) cho thấy sự hứa hẹn là một dung môi dùng cho xử lý sinh khối lignocellulose. Nhưng liệu sự tiếp cận này chỉ là một tò mò khoa học hay đây là một công nghệ tiên tiến trong sơ chế nguyên liệu đầu vào của nhiên liệu sinh học có thể thương mại hóa?Sinh khối lignocellulose là nguồn carbon tái sinh được và dồi dào bậc nhất trên hành tinh chúng ta. ...

8p heoxinhkute7 27-12-2010 142 25   Download

Dùng muối lỏng làm dung môi cho lignocellulose Các muối lỏng ( hay còn gọi là chất lỏng ion) là nhóm dung môi tương đối mới. Chúng được phát triển vào những năm thập niên 1980 như một thay thế thân thiện môi trường cho các dung môi hữu cơ truyền thống. Một hợp chất muối lỏng gồm các anion và cation hữu cơ có sự kết hợp lỏng lẻo, có điểm nóng chảy thấp dưới 100 oC.

12p heoxinhkute7 27-12-2010 122 25   Download